platform/x86: fujitsu-laptop: add and remove platform device in separate functions

Platform device handling adds a lot of complexity to fujitsu_init(),
which hinders its readability.  Extract code responsible for adding and
removing the platform device to separate functions.  Adjust whitespace
to make checkpatch happy.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Tested-by: Jonathan Woithe <jwoithe@just42.net>
Reviewed-by: Jonathan Woithe <jwoithe@just42.net>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>

diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index 9719c82..421402a 100644 (file)
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -765,6 +765,40 @@ static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event)
 
 /* ACPI device for hotkey handling */
 
+static int fujitsu_laptop_platform_add(void)
+{
+       int ret;
+
+       fujitsu_bl->pf_device = platform_device_alloc("fujitsu-laptop", -1);
+       if (!fujitsu_bl->pf_device)
+               return -ENOMEM;
+
+       ret = platform_device_add(fujitsu_bl->pf_device);
+       if (ret)
+               goto err_put_platform_device;
+
+       ret = sysfs_create_group(&fujitsu_bl->pf_device->dev.kobj,
+                                &fujitsu_pf_attribute_group);
+       if (ret)
+               goto err_del_platform_device;
+
+       return 0;
+
+err_del_platform_device:
+       platform_device_del(fujitsu_bl->pf_device);
+err_put_platform_device:
+       platform_device_put(fujitsu_bl->pf_device);
+
+       return ret;
+}
+
+static void fujitsu_laptop_platform_remove(void)
+{
+       sysfs_remove_group(&fujitsu_bl->pf_device->dev.kobj,
+                          &fujitsu_pf_attribute_group);
+       platform_device_unregister(fujitsu_bl->pf_device);
+}
+
 static int acpi_fujitsu_laptop_add(struct acpi_device *device)
 {
        int result = 0;
@@ -1146,25 +1180,13 @@ static int __init fujitsu_init(void)
 
        /* Register platform stuff */
 
-       fujitsu_bl->pf_device = platform_device_alloc("fujitsu-laptop", -1);
-       if (!fujitsu_bl->pf_device) {
-               ret = -ENOMEM;
-               goto err_unregister_acpi;
-       }
-
-       ret = platform_device_add(fujitsu_bl->pf_device);
-       if (ret)
-               goto err_put_platform_device;
-
-       ret =
-           sysfs_create_group(&fujitsu_bl->pf_device->dev.kobj,
-                              &fujitsu_pf_attribute_group);
+       ret = fujitsu_laptop_platform_add();
        if (ret)
-               goto err_del_platform_device;
+               goto err_unregister_acpi;
 
        ret = platform_driver_register(&fujitsu_pf_driver);
        if (ret)
-               goto err_remove_sysfs_group;
+               goto err_remove_platform_device;
 
        /* Register laptop driver */
 
@@ -1186,13 +1208,8 @@ err_free_fujitsu_laptop:
        kfree(fujitsu_laptop);
 err_unregister_platform_driver:
        platform_driver_unregister(&fujitsu_pf_driver);
-err_remove_sysfs_group:
-       sysfs_remove_group(&fujitsu_bl->pf_device->dev.kobj,
-                          &fujitsu_pf_attribute_group);
-err_del_platform_device:
-       platform_device_del(fujitsu_bl->pf_device);
-err_put_platform_device:
-       platform_device_put(fujitsu_bl->pf_device);
+err_remove_platform_device:
+       fujitsu_laptop_platform_remove();
 err_unregister_acpi:
        acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);
 err_free_fujitsu_bl:
@@ -1209,10 +1226,7 @@ static void __exit fujitsu_cleanup(void)
 
        platform_driver_unregister(&fujitsu_pf_driver);
 
-       sysfs_remove_group(&fujitsu_bl->pf_device->dev.kobj,
-                          &fujitsu_pf_attribute_group);
-
-       platform_device_unregister(fujitsu_bl->pf_device);
+       fujitsu_laptop_platform_remove();
 
        acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver);